JEE Main
- Exam
- JEE Main
- Subject
- Chemistry
- Chapter
- p Block Elements (Group 13 & 14)
JEE Main · Chemistry · p Block Elements (Group 13 & 14)
In which of the following reactions, hydrogen is liberated? (i)...
In which of the following reactions, hydrogen is liberated?
(i)
(ii)
(iii) \mathrm{I}
Options
- Ai, ii
- Bii, iii
- Ci, iii
- Di, ii, iii
Correct answer
D. i, ii, iii
Step-by-step solution
(i)
(ii) (iii) \begin{aligned}
\mathrm{NaBH}}_{4}+\mathrm{I}_2 \longrightarrow & \mathrm{BH}_3+\mathrm{NaI}+\mathrm{HI} \\
& \downarrow\left(\mathrm{NaBH}_4\right) \\
& 2 \mathrm{BH}_3+2 \mathrm{NaI}+\mathrm{H}_2
\end{aligned}